Quarterly report pursuant to Section 13 or 15(d)

Business Combinations - Allocation Of Purchase Consideration (Details)

v3.8.0.1
Business Combinations - Allocation Of Purchase Consideration (Details) - USD ($)
$ in Thousands
Jul. 27, 2016
Mar. 31, 2017
Dec. 31, 2016
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Finite lived intangible asset, weighted average useful life 14 years 11 months    
Goodwill   $ 249,863 $ 327,836
Wireless Maritime Services      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Equity method investment, ownership percentage 49.00%    
Santander      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Equity method investment, ownership percentage 49.00%    
Emerging Markets Communications LLC      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Cash and cash equivalents $ 8,208    
Restricted cash 16,257    
Other current assets 60,625    
Property, plant and equipment 82,220    
Equity method investments $ 152,700    
Finite lived intangible asset, weighted average useful life 5 years 11 months    
Other non-current assets $ 2,321    
Accounts payable and accrued liabilities (68,864)    
Debt, including current (371,990)    
Unfavorable vendor contracts, including current (13,500)    
Deferred tax liabilities, net (71,954)    
Deferred revenue, non-current (4,602)    
Other non-current liabilities (9,479)    
Estimated fair value of net assets acquired (132,558)    
Consideration transferred 166,289    
Goodwill $ 298,847    
Emerging Markets Communications LLC | Completed technology      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Finite lived intangible asset, weighted average useful life 3 years 5 months    
Intangible assets: $ 18,500    
Emerging Markets Communications LLC | Customer relationships      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Finite lived intangible asset, weighted average useful life 8 years    
Intangible assets: $ 47,700    
Emerging Markets Communications LLC | Backlog      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Finite lived intangible asset, weighted average useful life 3 years    
Intangible assets: $ 18,300    
Emerging Markets Communications LLC | Trademarks      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]      
Finite lived intangible asset, weighted average useful life 5 years    
Intangible assets: $ 1,000